Abstract
ABSTRACT The increase in plant density, combined with the use of hybrids in onion cultivation, has provided significant gains in yield, with a direct impact on the amount of absorbed macronutrients. The present work aimed to evaluate the yield and quality of two onion cultivars under a densified system as a function of potassium doses supplied via fertirrigation. A randomized complete block design was used in a 2 x 7 factorial scheme with four replications. The treatments consisted of two cultivars (IPA 11 and Rio das Antas) and seven potassium doses (0, 70, 140, 210, 280, 350 and 420 kg ha-1 K2O), provided by fertigation. The potassium doses that provided maximum total and commercial yields were 215 and 216 kg ha-1 of K2O, respectively. The soluble solids and the percentage of bulbs of classes 2, 3 and 4 were not influenced by potassium fertilization. There was a reduction in the percentage of non-commercial bulbs with the increase of potassium doses. The dose with maximum economical efficiency was 210.6 kg ha-1 of K2O, responsible for a commercial yield of 61.8 t ha-1.
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Claims 6
Claim · model-written summary
A potassium dose of 215 kg ha-1 of K2O provided maximum total onion yield.
- Taxon
- onion
Allium cepae1 - Treatment
- potassium dosese0
- Outcome
- total and commercial yieldse0
- Direction
- maximume0
- Value
- 215e0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The potassium doses that provided maximum total and commercial yields were 215 and 216 kg ha-1 of K2O, respectively.”
e1“onion cultivars”
Claim · model-written summary
A potassium dose of 216 kg ha-1 of K2O provided maximum commercial onion yield.
- Taxon
- onionAllium cepae1
- Treatment
- potassium dosese0
- Outcome
- commercial yieldse0
- Direction
- maximume0
- Value
- 216 kg ha-1 of K2Oe0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The potassium doses that provided maximum total and commercial yields were 215 and 216 kg ha-1 of K2O, respectively.”
e1“onion cultivars”
Claim · model-written summary
Potassium fertilization did not influence onion soluble solids or the percentages of class 2, 3, and 4 bulbs.
- Taxon
- onionAllium cepae1
- Treatment
- potassium fertilizatione0
- Outcome
- soluble solids and the percentage of bulbs of classes 2, 3 and 4e0
- Direction
- not influencede0
Not reportedComparator
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The soluble solids and the percentage of bulbs of classes 2, 3 and 4 were not influenced by potassium fertilization.”
e1“onion cultivars”
Claim · model-written summary
The percentage of non-commercial onion bulbs declined with increasing potassium dose.
- Taxon
- onionAllium cepae1
- Treatment
- potassium dosese0
- Outcome
- percentage of non-commercial bulbse0
- Direction
- reductione0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“There was a reduction in the percentage of non-commercial bulbs with the increase of potassium doses.”
e1“onion cultivars”
Claim · model-written summary
The maximum economic efficiency dose was 210.6 kg ha-1 of K2O.
- Taxon
- onionAllium cepae1
- Outcome
- maximum economical efficiencye0
- Value
- 210.6 kg ha-1 of K2Oe0
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dose with maximum economical efficiency was 210.6 kg ha-1 of K2O”
e1“onion cultivars”
Claim · model-written summary
The maximum economic efficiency dose produced commercial yield of 61.8 t ha-1.
- Taxon
- onionAllium cepae1
- Treatment
- 210.6 kg ha-1 of K2Oe0
- Outcome
- commercial yielde0
- Value
- 61.8 t ha-1e0
Not reportedComparatorDirection
Organisms pictured · Representative pictures of the matched species, not figures from the paper.
Verbatim
e0“The dose with maximum economical efficiency was 210.6 kg ha-1 of K2O, responsible for a commercial yield of 61.8 t ha-1.”
e1“onion cultivars”
The same questions in other papers
fertilization · quality: sugar starch · Allium cepa (onion)Results differ
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- positive
- no effect
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See all 44 papers →potassium · yield · Allium cepa (onion)Positive and negative results
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- positive
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See all 59 papers →Claims are grouped by organism, treatment and what was measured or targeted. A paper counts as positive when any of its claims in the group is positive.